<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>测试</title>
    <link rel="stylesheet" href="./css/index.css">
    <style>
        p {
            color: red;
        }
        .p1 {
            color: blue ;
        }
        #id1 {
            color: orange;
            height: 100px;
            background-color: thistle;
        }
    </style>
</head>
<body>
    <p>This is a test page.</p>
    <p class="p1" style="color: green;">This is a test page1.</p>
    Hello World!
    <br>
    和你一起学习HTML!
    <div id="id1" class="test p1">11111</div>

    <div>22222</div>


</body>
</html>